Here is the full list of all 50 Last Will achievements.
Complete the passageway.
Complete the library.
Complete the second episode with over 30 minutes to spare.
Complete the darkroom.
Complete the first episode with over 30 minutes to spare.
Complete a full run of the Chaos Gauntlet within the time limit.
Complete the Chaos Gauntlet with over 30 minutes to spare.
Complete the transfer chamber.
Unlock a hundred doors.
Reject the will and your inheritance.
Deliberately take out the entire mansion, and whatever may be lost with it.
Become the professor of the Gladsbury Estate.
Completed all four episodes within the time limit.
Complete the fourth episode with over 30 minutes to spare.
Complete a full run of episode 4 within the time limit.
Complete the greenhouse.
Complete the third episode with over 30 minutes to spare.
Complete a full run of episode 3 within the time limit.
Complete a full run of episode 2 within the time limit.
Complete the bunker room.
Complete a full run of episode 1 within the time limit.
Open 50 doors.
Complete the dining hall.
Complete the guest wing.
Watch the prologue.
Witness another player complete the transfer.
Complete the laboratory.
Complete the south garret.
Complete the observatory.
Complete the gallery.
Complete the isolated study.
Complete the pantry.
Complete the workshop.
Complete the conservatory.
Complete the master bedroom.
Ensure no drawer, panel or door is left open in a successful multiplayer game.
Complete the chapel.
Complete the archives.
Complete the wine cellar.
Complete the storage cellars.
Complete the old tower.
Complete the chess room.
Complete the study parlor.
Listen to your first audio recording.
Complete the office.
Complete the game room.
Open your first door in the mansion.
Complete the entrance hall.
Enter the mansion with a full team of four players.
Complete any act with a full team in under 40 minutes.